[vtkusers] Scalar Type of vtkDICOMImageReader

[Jothybasu K Selvaraj]

I checked with ImagePlaneWidget which gives you pixel values on mouse
move.It gives me proper HU values (as it is converting automatically).

Jothy

On Tue, Apr 13, 2010 at 8:32 PM, Scott Johnson <Scott.Johnson at neuwave.com>wrote:

> In my files the Pixel Padding value is 63536.  As a signed short, that's
> -2000.
>
> Good catch.
>
> Also, I wasn't expecting vtkDICOMImageReader to perform the HU
> computation.  It overachieved.  That would be a good thing to put in the
> documentation.
>
> Thanks
>
>                -- Scott
>
> -----Original Message-----
> From: John Drescher [mailto:drescherjm at gmail.com]
> Sent: Tuesday, April 13, 2010 2:27 PM
> To: Scott Johnson
> Cc: Jothybasu K Selvaraj; vtkusers at vtk.org
> Subject: Re: [vtkusers] Scalar Type of vtkDICOMImageReader
>
> On Tue, Apr 13, 2010 at 3:20 PM, John Drescher <drescherjm at gmail.com>
> wrote:
> > On Tue, Apr 13, 2010 at 3:18 PM, Scott Johnson
> > <Scott.Johnson at neuwave.com> wrote:
> >> Right now I just want the unsigned short CT numbers as the pixel
> values.
> >>
> >>
> >>
> >> I'm seeing values as small as -3024.
>
>
> Here is what I get for one LungCT case I just looked at:
> 0028|0120 Pixel Padding Value = -2000
>
> This will make pixel values outside of the person -3024.
>
> John
>
> John
>
> >>
> >
> > Take a look at the padding value in the dicom
> >
> > John
> >
>
>
>
> --
> John M. Drescher
>
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